Apple is working on a secret project to develop wearable devices that can monitor the blood sugar of diabetics without using invasive finger sticks, part of a vision that originated with company founder Steve Jobs, according to a report. Cor, a company Apple acquired in 2010, has been working for more than five years on a way to integrate noninvasive glucose monitoring into a wearable like an Apple Watch device. Glucose monitoring traditionally has required that diabetics use lancets to pierce their fingertips at least four times daily.